refactor to functional component and typescript

[allandiego]

@jkdrangel I have refactored this component using functional approach and typescript do you have interest in this pull request?

[jkdrangel]

Yes @allandiego thanks for this.

[Ryanjso]

Temporary fix for those who may need it

import SwitchSelector from 'react-native-switch-selector'

export const Switch = () => {
    interface SwitchFix extends React.Component {}
    const Switch = SwitchSelector as any as {
        new (): SwitchFix
    }

    const options = [
        { label: 'Delivery', value: 'delivery' },
        { label: 'Pickup', value: 'pickup' },
    ]

    const props: any = {
        options,
        initial: 0
    }

    return <Switch {...props} />
}

[ArthurAssuncao]

I extract the index to a function component with typescript, see below.
https://gist.github.com/ArthurAssuncao/ebe852e5d7e093389daa2a474e41741b